/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.compileflow.engine.common.utils;

import com.alibaba.compileflow.engine.common.CompileFlowException;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * @author yusu
 */
public class ObjectFactory {

    private static final Map<String, Object> CLAZZ_CACHE = new ConcurrentHashMap<>();

    public static Object getInstance(String className) {
        return CLAZZ_CACHE.computeIfAbsent(className, (c) -> {
            try {
                return ClassUtils.newInstance(className);
            } catch (Exception e) {
                throw new CompileFlowException(
                    "ClassHolder newInstance error, class name is " + className, e);
            }
        });
    }

}
